linux-kernel - Re: [PATCH 00/10] Containers(V10): Generic Process Containers

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Message-Id: <20070604140533.65e25286.pj@sgi.com>
Date:	Mon, 4 Jun 2007 14:05:33 -0700
From:	Paul Jackson <pj@....com>
To:	"Serge E. Hallyn" <serue@...ibm.com>
Cc:	menage@...gle.com, serue@...ibm.com, akpm@...ux-foundation.org,
	dev@...ru, xemul@...ru, vatsa@...ibm.com, ebiederm@...ssion.com,
	haveblue@...ibm.com, svaidy@...ux.vnet.ibm.com, balbir@...ibm.com,
	cpw@....com, ckrm-tech@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org, containers@...ts.osdl.org,
	mbligh@...gle.com, rohitseth@...gle.com, devel@...nvz.org
Subject: Re: [PATCH 00/10] Containers(V10): Generic Process Containers

> Would it then make sense to just
> default to (parent_set - sibling_exclusive_set) for a new sibling's
> value?

Which could well be empty, which in turn puts one back in the position
of dealing with a newborn cpuset that is empty (of cpus or of memory),
or else it introduces a new and odd constraint on when cpusets can be
created (only when there are non-exclusive cpus and mems available.)

> An option is fine with me, but without such an option at all, cpusets
> could not be applied to namespaces...

I wasn't paying close enough attention to understand why you couldn't
do it in two steps - make the container, and then populate it with
resources.

But if indeed that's not possible, then I guess we need some sort of
option specifying whether to create kids empty, or inheriting.

-- 
                  I won't rest till it's the best ...
                  Programmer, Linux Scalability
                  Paul Jackson <pj@....com> 1.925.600.0401
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